Pyrograph.



PATENTED JUNE 18, 1905.

W. H. PIGG. PYROGRAPH.

APPLICATION FILED 1523211905.

WIM/55555;

Alion/ley M/g/ BY% UNITED STATES Patented June 13, 1905.

PATENT OEEICE.

PYROGRAPH.

SPECIFICATION forming part of Letters Patent No. 792,206, dated June 13, 1905. Application filed February 27, 1905. Serial No. 247,483.

To aZ whom it may concern:

Be it known that I, I/VILBER H. FIGG,-a citizen of the United States, residing at Tashington, in the District of Columbia, have invented new and useful Improvements in Pyrographs, of which the following is a specification.

My invention relates to improvements in pyrographs; and the object is to provide a pyrograph with an attachment whereby the smoke generated during the operation with the instrument will be dissipated and dispersed, so that the point thereofl will at all times during the progress of the work be clear and unobstructed to visual observation.

The invention consists in the novel construction of parts and their aggroupment in operative combination, all as will be hereinafter fully specified and the asserted novelty then particularly pointed out and distinctly claimed.

It will be premised that the device is intended to be used in association and combination with any pyrograph of the types now in use and also applicable to gas-receptacles which supply the instrument with the burning fuel.

I have fully and clearly illustrated my invention in the annexed drawings, to be taken as a part of this specification. V

Reference being had to the drawings, Figure 1 is a detail View, partly in vertical central section through the stopper, indicating the several ducts leading` to and from the fuelreceptacle, also showing the air-bulbs and the supply-pipe leading to the air-chamber, the fuel-receptacle beingindicated in dotted lines. Fig. 2 is a detail perspective view of the metal air-pipe which is immediately associated with the pyrograph. Fig. 3 is adetail view showing the pyrograph and the metal air-pipe in operative connection.

In the drawings similar parts appearing in the several illustrations are designated by like reference notations, and reference being made thereto, A designates the fuel-receptacle of any capacity required and provided with a neck 1, in which is made an opening to receive and hold the stopper in usual manner.

B designates the stopper adapted to seal the mouth of the fuel-receptacle and formed with an enlargement 2, adapted to set down on the edge of the mouth of the fuel-receptacle and having formed therein an air-chamber 3, having an air-duct 4 leading therein, to the outer end of which is connected a flexible air-tube 5, leading from compressible air-supply bulbs of any suitable type. Preferably at a point opposite to the iniuent air-duct 4 the airchamber has an effluent air-duct 6, to which is connected one end of a fiexible air-tube 7, the other end of which is connected to the end of a metal air-pipe 8. This metal air-pipe 8 is designed to be positioned against and eX- tend along the pyrograph, substantially asindicated in Fig. 3 of the drawings, with its discharging end shaped and directed to deliver a current of air against the point of the instrument, as shown at 9, and thus dissipate or drive the generated smoke from the point during thework. The metal air-pipeis clamped detachably to the instrument, as by springmetal clamps 10, secured thereto, which grasp the instrument and hold the pipe in the required position.

From the air-chamber 3 leads a vertical airduct 11, opening' into the fuel-receptacle, and from the lower end of the stopper leads a gasduct 12, directed upward and then outwardly through a nipple 13, to the end of which is connected a flexible gas-tube 14, the other end of which is connected to the pyrograph 15 in any suitable manner.

The operation may be stated as follows: The respective elements having been arranged and combined as shown or indicated in the drawings and specilied in the description, the air is forced into the air-chamber, from where it finds emission through the air-tube and metal air-pipe and at the same time down into the fuel-receptacle,where it mixes with the evaporations of the fuel and is forced through the gas duct and tube into the instrument. Then the discharging gas is ignited at the perforation in the point of the instrument, and When in proper heated condition the instrument is applied as skill may require. At the same time the current of air is projected on the point of the instrument, with the result that the engendered smoke is dispersed and eliminated.

Having' thus described my invention, what I claim, and desire to secure by Letters Patent, is4

1. The combination with a pyrograph, of au air-pipe secured on the exterior of the instrument and disposed to deliver a current of air on the point of the instrument, and means to force air through the air-pipe.

2. The combination with a fuel-receptacle, a stopper having,` an air-chamber, a duct leading therefrom communicating` with the fuelreceptacle, an air-pipe 6 leading from said chamber and a fuel-duet leading from the receptacle, of a pyrograph, a metal air-pipe secured to the pyrograph to deliver a current of air on the point of the instrument, a tube connecting the metal pipe with the air-pipe, and a flexible tube connecting the fuel-duet to the pyrograph.

3. In Combination with the fuel-receptacle of a pyrograph, a stopper provided'with an air-Chamber, an air-duet opening into the fuelreeeptaele, a gas-eflluent duet, and air influent and efuent ducts opening,` into and from the air-chamber, means to deliver air to the air-chamber, iiexible air and gas tubes, a metal tube secured to the pyrograph to deliver air on the point of the instrument, and connected to the flexible air-tube.

4L. In a pyrograph, the combination with a Huid-fuel receptacle, of a stopper formed with an air-chamber and oppositely-placed air influent and effluent ducts, and a downwardlyextending air-influent duet opening` into the fuel-receptacle, and an upwardly and outwardly extending gas-effluent duet leading from the lower end of the stopper.

In testimony whereof I aflix my signature in presence of two subscribing witnesses.

VILBER H. FIGG. I/Vitnesses:

LEONARD KUKART, EDWIN R. HART. 

